Okay so awhile ago I had the cat warm up cycle removed from my car and it has occasionally stumped on a cold start.. Would kinda sound cammed for a little bit. Well now since the weather is cold it's really bad.. I'll start it up it will stumble and then shut off.. I've been contacting my tuner to have the cat warm up turned back on so I can actually start my car in the mornings.. Hasn't answered me in awhile over a month...

How can I have this thing turned back on my car?

My tuner lives close by so I would always drive to him intend of via email

 

You will still have to find someone with HP tuners to flash it, even via an e-mail tune, and you will have to unlock the PCM on thier cable again.

Cat warm-up only retards timing for a bit, should not make the car run any differently. Odds are you have some other sort of issue.

 

i can flash a tune for you if you get a file sent to me but i'm no tuner!

 

Unless you go to him he will not help u.

 

I know for sure it stumples on startup is cause the cat warm up.. Did it since the day he took it off. I néed to get it turned on ASAP.. How would I go about this? I need to buy a cable or something?

 

IMO sounds like you need a new tuner bro.

Buy you HPTuners Standard.

 

What?

 

agreed...

 

yeah man having hptuners makes everything a lot easier/better. i can also recommend a tuner for you! just like everyone else can lol. we all have our preferences.

 

Very True lol

 

Was byt tuning u in person? If not u r sol. He turned his back on all his remote tuned clients.

 

this sounds like when my o2's were shot it did this

 

Well the time itself isn't bad at all..my ther was a great tuner just hasn't answered me when I need him lol.. So what would I have to get exactly to have someone turn on my warm up cycle?

 

Hptuners.

Link
HPTuners.com >> Performance At Your Fingertips

 

Yes he was.. And really? Why.. I don't understand

 

I've looked around some hp tuners settings. If you do have vcm suite make a copy of your existing tune. Open it. There is a tab that says "engine" click it. Box will open up the first tab should be in General and under that it should say Catalyst heating- Disable or enable it. then save. I think that's it but I'm no tuner. If anyone actually knows help the guy out.

 

That's part of it...there is couple more adjustments you have to make iirc

 

you have to make changes to your tune other than just turning cat warm up on. trims have to be set or it will run like crap on start up....ask me how i know.

 

OP you need to either buy hptuners, or drive to someone who has it.

 

It sort of depends on how the tune was setup to begin with, but more than likely your cam tables in particular will need to be changed in order for the car to not run all sorts of funky when re-enabling the cat warmup function.

 

ya don't say...........lol

 

Haha.. not that you would know anything about that one, right?

 

absolutely not. never ever made that mistake...

anyways, OP. everyone's right. either buy hptuners or go to someone who has it. but you're gonna need a new tune file either way.

 

hey, try swapping your o2's out first, see if that helps, they could be reading off and causeing yoru issue,

 

Investing in your own hptuners will save you from alot of problem down the road.. IMO lol